Carl Blare has some good positive points especially when it comes to part 15:239 and keeping compliance. The C. Crane is far under the maximum legal limit of 250 uV/m at 3 meters. That in mind matching the DBU (and turning it up a tad most likely won't get you past compliance and end you up with a NOUO. Turning a transmitter down and using a better antenna makes good sense to allow your transmitter to have a lighter load on its internal parts and thus allows a longer life for it. Plus a well matched antenna causes less harmonics and spurs when you run the power at a lower level. Maybe a better antenna without turning up the C. Crane could get you closer to legal without making it work too hard. Trouble is we'd have to do tests to see what length would get you close to the max legal. I'm always one for operating at the most efficient way so you save batteries too. It truly makes good sense for Carl to use a better antenna and keep the power at a lower level and get the same range or maybe a few inches better.
The antenna is the rod and the transmitter is the heater. Add a loading coil and you have a perfect hot rod. Why does it make sense?
It makes sense because the transmitter becomes more efficient. The internal pot allows it to be carefully set to today's 15.239 rule.
The transmitter is "future proof" because when the rules are changed to allow more field strength on FM, turn up the pot and you're good to go.
It's like adding designer stripes to a car. Makes the car more efficient.
1. The C.Crane FM2 Part 15 Transmitter can be used as a calibration standard.
2. There is a secret power adjustment pot which can be used to set the field strength to the legal limit since the manufacturer didn't bother to do this at the factory.
3. Turning down the power of a transmitter and using a better antenna will make it last longer.
4. Turning down the power of a transmitter and using a better antenna reduces harmonics.
5. Adding a loading coil makes a transmitter more efficient.
6. Adding designer stripes to a car makes it more efficient.
Really?
Neil
Neil, I see where you're going with this.
We should add designer stripes to our transmitters!
What a hobby!
Clip/conclusion from Mr Blare in Reply 19 of this thread ... We should add designer stripes to our transmitters. ...
Apparently Mr Blare considered points 1-5 in Reply 18 here to be of less value than the "designer stripes" described in point 6 thereof - the only point to which he responded.
Or was he was hoping to distract others from reality and his own understanding of such by dismissing (not responding to) points 1-5 thereof?
There's more to life than reality.
You could be having a DooWop Halloween.
"The transmitter is "future proof" because when the rules are changed to allow more field strength on FM, turn up the pot and you're good to go."
When?...not if?
Mark
Mr Blare posted in Reply 21: There's more to life than reality. ...
But reality is first, is it not?
There was a time before reality started, so I guess that was first.
Einstein had something interesting to say about it...
"Reality is an illusion, but a persistent one."
A joystick antenna exists outside of reality while it's only an imaginary concept, but can become quite real once built and put to use.
Mark each point in post 18 as being True or False.
Is this a trick question?
Neil
How can you call it a "pop" quiz? Quizes aren't popular.
I can't find a single instance where either true or false applies to the 5 learnings (Things I Learned Reading This Thread - Neil Radio8Z) because all the situations are conditional upon other factors not reflected in the learnings as stated.
1. The C.Crane FM2 Part 15 Transmitter can be used as a calibration standard. ANSWER: IF NEW AND UNMODIFIED MAYBE WITH FAITH
2. There is a secret power adjustment pot which can be used to set the field strength to the legal limit since the manufacturer didn't bother to do this at the factory. ANSWER: HALF TRUE BECAUSE WE WERE NEVER AT THE FACTORY BUT HAVE THE POT
3. Turning down the power of a transmitter and using a better antenna will make it last longer. ANSWER: LESS OF A MISMATCH REDUCES STRESS EQUALS LONGER LIFE
4. Turning down the power of a transmitter and using a better antenna reduces harmonics. ANSWER: NO IT'S THE COIL THAT DOES IT
5. Adding a loading coil makes a transmitter more efficient. ANSWER: NOT AUTOMATICALLY AND IT'S MORE THE ANTENNA, OR REALLY THE WHOLE SYSTEM, BUT THE COIL MUST BE RESONANT OR THERE'S NO POINT TO IT.
6. Adding designer stripes to a car makes it more efficient. ANSWER: THOUSANDS OF RACE CAR DRIVERS SWEAR BY IT.
Oh, wait a minute... it WAS a trick question: TRUE.
"I can't find a single instance where either true or false applies to the 5 learnings (Things I Learned Reading This Thread - Neil Radio8Z) because all the situations are conditional upon other factors not reflected in the learnings as stated."
I agree and that is why I tried to make this a true/false situation knowing that this would not work. Each statement could be true or false, depending on the context in which it is applied, rather than in general.
BTW, I was always under the impression the "pop" as in pop quiz meant unexpected as in the sudden pop of a cork.
Neil
This was either fun or embarassing, true or false?
God gave birds special feet so they would not get electrocuted when sitting on power lines. My mother told me this so I know it's true.